Controller runs on solar (PV) power as well as on available Grid Power(1 Phase and 3 phase).We have developed smart and safe auto-change over solar from/to grid to utilise both power at the same time to get require water discharge from the pump. Auto changeover is done using smart sense, no need manual connection/operation. User can connect both power for 24 hours, controller use solar power in daytime and automatically change on grid power at night if available. This feature also avail the benefits of power sharing, controller use solar power maximum and remaining power from the grid to maintain constant output through day. It is very helpful during monsoon days and in cloudy weather.